CN110146126A - Cable connector stability monitoring method and cable connector monitor system - Google Patents
Cable connector stability monitoring method and cable connector monitor system Download PDFInfo
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- CN110146126A CN110146126A CN201910391493.9A CN201910391493A CN110146126A CN 110146126 A CN110146126 A CN 110146126A CN 201910391493 A CN201910391493 A CN 201910391493A CN 110146126 A CN110146126 A CN 110146126A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
This application involves a kind of cable connector stability monitoring methods and cable connector to monitor system.Cable connector monitoring method includes: the first light beam of transmitting, and is radiated at the first light beam on cable connector and forms the second light beam；The first spectrum picture is generated after carrying out demodulation analysis to the second light beam；The first temperature and the first oscillation intensity are obtained after analyzing the first spectrum picture；The first light beam is set to be radiated at formation third light beam on first position；The second spectrum picture is generated after carrying out demodulation analysis to third light beam；Second temperature and the second oscillation intensity are obtained after analyzing the second spectrum picture；Analysis the first temperature of comparison and the second temperature and the first oscillation intensity and the second oscillation intensity, and analysis is obtained as a result, the analysis result is used to indicate the operating status of the cable connector.Cable connector stability monitoring method and cable connector provided by the present application monitoring system can solve be unable to judge accurately in traditional scheme cable connector operation conditions whether Yi Chang problem.
Description
Technical field
This application involves cable monitoring fields, more particularly to a kind of cable connector stability monitoring method and cable connector
Monitoring system.
Background technique
In the power supply system of city and large and medium-sized enterprise, power cable power transmission and distribution are used more and more.But electric power electricity
Cable easily breaks down in the process of running.According to for many years to power cable accident analysis shows that, 90% or more cable fortune
Row failure occurs in the position of cable connector.When contact resistance increase and other issues occurs in cable connector, at cable connector
Running temperature accordingly increase, to accelerate the aging of insulating layer at cable connector, the hair of cable fire but will be caused when serious
It is raw.In addition to this, the vibration at cable connector can also cause cable connector to fall off and then lead to the generation of accident.Therefore, to electricity
The monitoring of temperature and vibration at cable joint is particularly important.
Currently, many enterprises monitor the temperature and vibration of power cable connector using the method for artificial periodic measurement.By
It is all laid in cable duct or is embedded in underground in cable, worker's measurement is not only inconvenient, is also very dangerous sometimes.
Moreover, worker's measurement is usually to carry out temperature measurement at cable connector using temperature sensor, this measurement method is vulnerable to week
The temperature in collarette border influences, so that whether the temperature for being unable to judge accurately cable connector is abnormal.
Therefore, whether abnormal there is a problem of being unable to judge accurately cable connector operation conditions in traditional scheme.
Summary of the invention
Based on this, it is necessary to which for being unable to judge accurately in traditional scheme, whether cable connector operation conditions is abnormal to be asked
Topic provides a kind of cable connector stability monitoring method and cable connector monitoring method.
A kind of cable connector stability monitoring method, the cable connector is for connecting the first cable and the second cable, packet
It includes:
Emit the first light beam, and be radiated at first light beam on the cable connector and form the second light beam, wherein institute
The first light beam is stated with first wave length, second light beam has second wave length；
The first spectrum picture is generated after carrying out demodulation analysis to second light beam；
The first temperature and the first oscillation intensity are obtained after analyzing first spectrum picture；
First light beam is set to be radiated at formation third light beam on first position, wherein the third light beam has third
Wavelength, the first position are located on first cable；
The second spectrum picture is generated after carrying out demodulation analysis to the third light beam；
Second temperature and the second oscillation intensity are obtained after analyzing second spectrum picture；
Analysis compares first temperature and the second temperature and first oscillation intensity and second vibration
Intensity, and analysis is obtained as a result, the analysis result is used to indicate the operating status of the cable connector.
The cable connector stability monitoring method provided by the present application, for monitoring the operation shape of the cable connector
State, the cable connector is for connecting the first cable and the second cable.The cable connector STABILITY MONITORING provided by the present application
Method the temperature of the cable connector and oscillation intensity can be compared with the temperature of first cable and oscillation intensity
Analysis, and then judge whether the operation of the cable connector is abnormal.The cable connector STABILITY MONITORING side provided by the present application
Method, using the wavelength of light by the principle that environment to be measured is influenced and is changed to the operation shape of the cable connector and first cable
Condition is monitored, at the same can interference to avoid electromagnetism to monitoring, more accurately the operation conditions of cable connector is monitored.
The cable connector stability monitoring method provided by the present application, which can solve, is unable to judge accurately cable connector in traditional scheme
Operation conditions whether Yi Chang problem.
In one of them embodiment, the analysis compares first temperature and the second temperature and described first
Oscillation intensity and second oscillation intensity, and analysis is obtained as a result, the analysis result is used to indicate the cable connector
Operating status, comprising:
First temperature and the second temperature are obtained, and obtains the first of first temperature and the second temperature
Difference；
First oscillation intensity and second oscillation intensity are obtained, and obtains first oscillation intensity and described
Second difference of two oscillation intensities；
Judge whether first difference is more than first threshold；
If first difference is more than the first threshold, judge whether second difference is more than second threshold；
If second difference is more than the second threshold, the analysis result is cable connector operation exception.
In one of them embodiment, it is described judge whether first difference is more than first threshold after, the method is also
Include:
If first difference is no more than the first threshold, judge whether are first temperature and the second temperature
More than preset temperature value；
If first temperature and the second temperature are more than preset temperature value, judge second difference whether be more than
The second threshold；
If second difference is no more than the second threshold, the analysis result is first cable run overload.
In one of them embodiment, if first difference is no more than the first threshold, described first is judged
After whether temperature and the second temperature are more than preset temperature value, the method also includes:
If first temperature and the second temperature are more than preset temperature value, judge second difference whether be more than
The second threshold；
If second difference is no more than the second threshold, the analysis result is first cable and the cable
Connector runs fault-free；
If second difference is more than the second threshold, the analysis result is that there are measurement errors, need to be re-measured.
In one of them embodiment, the first light beam of the transmitting, and first light beam is made to be radiated at the cable connector
The second light beam of upper formation, wherein first light beam has first wave length, and second light beam has second wave length, before, institute
State method further include:
The first fiber-optic grating sensor and the second fiber-optic grating sensor are set gradually on cable under test, wherein described
One fiber-optic grating sensor is set at the cable connector, and second fiber-optic grating sensor is set to first cable
On.
In one of them embodiment, the method also includes:
First light beam is set to be radiated at the 4th light beam of formation on the second position, wherein the 4th light beam has the 4th
Wavelength, the second position are located on second cable；
Third spectrum picture is generated after carrying out demodulation analysis to the 4th light beam；
Third temperature and third oscillation intensity are obtained after analyzing the third spectrum picture；
Analysis compares first temperature and the third temperature, and obtains first temperature and the third temperature
Third difference；And
First oscillation intensity and the third oscillation intensity are obtained, and obtains first oscillation intensity and described
4th difference of three oscillation intensities.
In one of them embodiment, the acquisition first oscillation intensity and the third oscillation intensity, and obtain institute
After the 4th difference for stating the first oscillation intensity and the third oscillation intensity, the method also includes:
Judge whether the third difference is more than third threshold value；
If the third difference is more than the third threshold value, judge the 5th difference whether more than the 5th threshold value, wherein described
5th difference is the difference of first difference and the third difference；And
Judge the 6th difference whether more than the 6th threshold value, wherein the 6th difference is second difference and described the
The difference of four differences；
If the 5th difference be more than the 5th threshold value, and the 6th difference be more than the 6th threshold value, described point
Result is analysed as second cable operation exception.
In one of them embodiment, if the third difference is more than the third threshold value, whether the 5th difference is judged
More than the 5th threshold value, wherein the 5th difference is the method after the difference of first difference and the third difference
Further include:
If the 5th difference is no more than the 5th threshold value, judge whether the third temperature is more than preset temperature
Value；
If the third temperature is more than the preset temperature value, judge the 4th difference whether more than the 4th threshold value；
If the 4th difference is no more than the 4th threshold value, the analysis result is the second cable normal operation.
It is described that first light beam is made to be radiated at the 4th light beam of formation on the second position in one of them embodiment, wherein
4th light beam has the 4th wavelength, and the second position is located on second cable, before, the method also includes:
Third fiber-optic grating sensor is set on cable under test, wherein the third fiber-optic grating sensor is set to
On second cable.
In one of them embodiment, the method also includes:
If the analysis result is cable connector operation exception, first kind alarm operation is executed；
If the analysis result is that first cable run overloads or second cable is operating abnormally, second is executed
Class alarm operation；
It if the analysis result is that there are measurement errors, need to re-measure, then execute the alarm operation of third class.
In one of them embodiment, the method also includes:
The analysis result is sent to terminal device.
A kind of cable connector monitoring system, is based on the above method, comprising:
Fiber-optic grating sensor, for issuing the first light beam, first light beam is by cable under test connector operation conditions
The second light beam is generated after influence, and third light beam is generated after being influenced by the first cable connector operation conditions；
Fiber Bragg grating (FBG) demodulator is connect with the fiber-optic grating sensor by optical fiber, with to the optical fiber grating sensing
Device emits first light beam, and generates demodulation result, the demodulation result according to second light beam and the third light beam
Including the first spectrum picture and the second spectrum picture；
Signal processor is connect with the fiber Bragg grating (FBG) demodulator signal, according to first spectrum picture and described
Second spectrum picture generates analysis as a result, the analysis result is used to indicate the operation conditions of the cable under test connector.
The fault monitoring system provided by the present application includes the fiber-optic grating sensor, the fiber Bragg grating (FBG) demodulator
With the signal processor.The fiber Bragg grating (FBG) demodulator emits first light beam to the fiber-optic grating sensor.In turn,
The fiber-optic grating sensor is to issuing first light beam at the cable under test connector and first cable.Described first
Light beam changes the wavelength of light after being influenced by cable under test joint temperature and vibration, and generates second light beam.Institute
It states the second light beam and is transmitted through the fiber to the fiber Bragg grating (FBG) demodulator, by the fiber Bragg grating (FBG) demodulator to second light beam
Spectrum Analysis is carried out, and generates the first spectrum picture.First light beam is influenced by temperature at first cable and vibration
Change the wavelength of light afterwards, and generates the third light beam.The third light beam is transmitted through the fiber to the fiber grating demodulation
Instrument carries out Spectrum Analysis to the third light beam by the fiber Bragg grating (FBG) demodulator, and generates second spectrum picture.It is described
Signal processor can analyze first spectrum picture and second spectrum picture, so generate analysis as a result,
The analysis result is used to indicate the operation conditions of the cable under test connector.The fault monitoring system provided in this embodiment
It is the monitoring system based on the cable connector stability monitoring method, the fault monitoring system can solve in traditional scheme
Whether abnormal there is a problem of being unable to judge accurately cable connector operation conditions.
Detailed description of the invention
Fig. 1 is the flow diagram for the cable connector stability monitoring method that one embodiment of the application provides.
Fig. 2 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 3 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 4 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 5 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 6 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 7 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 8 is the flow diagram for the cable connector stability monitoring method that another embodiment of the application provides.
Fig. 9 is the structural schematic diagram that the cable connector that one embodiment of the application provides monitors system.
Description of symbols:
Fault monitoring system 10
Fiber-optic grating sensor 100
Fiber Bragg grating (FBG) demodulator 200
Signal processor 300
Cable connector 20
First cable 21
Specific embodiment
Cable connector is also known as end.After cable laying is good, in order to make cable become a continuous route, each section of line must
It must be connected as an entirety, these tie points are known as cable connector.The cable connector at position is known as intermediate among cable run
Connector, and the cable connector of two end of route is known as terminals.Cable connector is to play waterproof for locking and fixing inlet-outlet line
Dust-proof and earthquake-proof dynamic effect.But operation conditions easily occurs for cable connector, such as temperature increases, vibrates too strong etc., still, passes
Whether abnormal there is a problem of being unable to judge accurately cable connector operation conditions in system scheme.Therefore, the application provides a kind of electricity
Cable joint stability monitoring method and cable connector monitor system, to solve the problems in traditional scheme.
Cable connector stability monitoring method and cable connector provided by the embodiments of the present application monitor system, are suitable for electricity
Cable joint is monitored.It is appreciated that cable connector stability monitoring method and cable connector prison provided by the embodiments of the present application
Examining system also can be applied to the cable of monitoring electric wire or other electric discharges.Cable connector stability provided by the embodiments of the present application
Monitoring method and cable connector monitoring system can also be monitored certain section of cable, to know whether certain section of cable runs
It is abnormal.Following embodiment monitors cable connector stability monitoring method and cable connector by taking the monitoring to cable connector as an example
System is illustrated.
In order to which the objects, technical solutions and advantages of the application are more clearly understood, by the following examples, and combine attached
Cable connector stability monitoring method and cable connector the monitoring system of the application is further elaborated in figure.It should
Understand, specific embodiment described herein only to explain the application, is not used to limit the application.
Referring to Figure 1, the application provides a kind of cable connector stability monitoring method, and the cable connector is for connecting the
One cable and the second cable, which comprises
S100 emits the first light beam, and is radiated at first light beam on the cable connector and forms the second light beam,
In, first light beam has first wave length, and second light beam has second wave length.
In one embodiment, first light beam is the light that wideband light source issues, and the wideband light source can make to measure
Process is more accurate.First light beam can be issued by fiber Bragg grating (FBG) demodulator, can also can issue the width by other
Instrument with light source issues, and can specifically select according to actual needs, the application is without limitation.First light beam is radiated at institute
Reflected light, i.e., described second light beam are formed after stating on cable connector.First light beam have the first wave length, but by
In the influence of the temperature and oscillation intensity of the cable connector, the wavelength of second light beam is not the first wave length, and
It is the second wave length.It is understood that the first wave length is not the second wave length.
S200 generates the first spectrum picture after carrying out demodulation analysis to second light beam；
First spectrum picture can reflect second light beam wavelength and the different corresponding intensity of wavelength.?
In one embodiment, the fiber Bragg grating (FBG) demodulator can carry out demodulation analysis to second light beam, and then generate described the
One spectrum picture.
S300 obtains the first temperature and the first oscillation intensity after analyzing first spectrum picture.
In one embodiment, processor can analyze first spectrum picture, according to second light beam
The information such as wavelength, the corresponding intensity of wavelength calculate first temperature and first oscillation intensity.First temperature
It can reflect with first oscillation intensity when first light beam is radiated at the cable connector, the fortune of the cable connector
Row state.The processor can choose the central processing unit for having edited good algorithm.
S400 makes first light beam be radiated at formation third light beam on first position, wherein the third light beam has
Third wavelength, the first position are located on first cable.
Preferably, the first position can be in the middle section of first cable.First light beam is radiated at described
It is reflected after on one position, generates the third light beam.The third light beam has the third wavelength, the third wavelength
Be by the first wave length by the first position temperature and oscillation intensity determine.
S500 generates the second spectrum picture after carrying out demodulation analysis to the third light beam.
Second spectrum picture can reflect the third light beam wavelength and the different corresponding intensity of wavelength.?
In one embodiment, the fiber Bragg grating (FBG) demodulator can carry out demodulation analysis to the third light beam, and then generate described the
Two spectrum pictures.
S600 obtains second temperature and the second oscillation intensity after analyzing second spectrum picture.
In one embodiment, processor can analyze second spectrum picture, according to the third light beam
The information such as wavelength, the corresponding intensity of wavelength calculate the second temperature and second oscillation intensity.The second temperature
With second oscillation intensity can reflect when first light beam irradiation at the first position, the fortune of first cable
Row state.The processor can choose the central processing unit for having edited good algorithm.
S700, analysis compare first temperature and the second temperature and first oscillation intensity and described the
Two oscillation intensities, and analysis is obtained as a result, the analysis result is used to indicate the operating status of the cable connector.
In one embodiment, the processor compares first temperature and the second temperature, and then sentences
Break the cable connector running temperature it is whether abnormal.If the difference of first temperature and the second temperature is more than setting
Threshold value then may determine that the temperature anomaly at the cable connector.The processor can also to first oscillation intensity and
Second oscillation intensity compares, if the difference of second oscillation intensity and first oscillation intensity is more than setting
Threshold value then may determine that the oscillation intensity of the cable connector is abnormal.It is understood that in the operation to the cable connector
When state is judged, temperature regime and vibration state in combination with the cable connector is needed to carry out discriminatory analysis.For example,
The difference of first temperature and the second temperature is more than the threshold value of setting, and first oscillation intensity and described second is shaken
The difference of fatigue resistance is more than the threshold value of setting, then may determine that the cable connector is operating abnormally.For example, first temperature and
The second temperature is more than preset temperature value, then may determine that first cable and the cable connector are operating abnormally,
There is the excessively high situation of temperature.
The cable connector stability monitoring method provided by the present application can be by the temperature and vibration of the cable connector
Intensity and the temperature and oscillation intensity of first cable are compared, so judge the cable connector operation whether
It is abnormal.The cable connector stability monitoring method provided by the present application, is influenced by environment to be measured using the wavelength of light and is changed
Principle the operation conditions of the cable connector and first cable is monitored, while can be to avoid electromagnetism to monitoring
Interference, is more accurately monitored the operation conditions of cable connector.The cable connector monitoring system provided by the present application can
It is whether abnormal to solve the problems, such as to be unable to judge accurately cable connector operation conditions in traditional scheme.
Referring to FIG. 2, in one embodiment of the application, the S800 includes:
S710 obtains first temperature and the second temperature, and obtains first temperature and the second temperature
The first difference；
S720 obtains first oscillation intensity and second oscillation intensity, and obtain first oscillation intensity and
Second difference of second oscillation intensity；
S730 judges whether first difference is more than first threshold；
Whether S740 judges second difference more than the second threshold if first difference is more than the first threshold
Value；
S750, if second difference is more than the second threshold, the analysis result is cable connector operation
It is abnormal.
It is understood that first difference refers to that temperature difference, second difference refer to the difference of oscillation intensity
Value.If first difference is more than the first threshold, and second difference is more than the second threshold, then shows the electricity
Cable joint is operating abnormally.The first threshold and the second threshold may be set according to actual conditions.It is understood that
When being monitored to the operating status of cable connector, if only single to the temperature of the cable connector or only strong to vibrating
Degree is monitored, and monitoring result error is larger.Method provided in this embodiment can be with combination temperature and oscillation intensity and described
The comparison of the operating status of cable connector and the first cable operating status, analysis obtain the operation shape of the cable connector
State.Therefore, method provided in this embodiment can more fully analyze the operating status of the cable connector, enhance cable connector
The accuracy of monitoring running state.
Referring to FIG. 3, in one embodiment of the application, after the S370, the method also includes:
S371 judges first temperature and second temperature if first difference is no more than the first threshold
Whether degree is more than preset temperature value；
S372 judges that second difference is if first temperature and the second temperature are more than preset temperature value
No is more than the second threshold；
S373, if second difference is no more than the second threshold, the analysis result is first cable run
Overload.
When first temperature and the second temperature are more than preset temperature value, if second difference is no more than described
Second threshold then may determine that the first cable run overload causes first cable and the cable under test connector to run
Temperature is excessively high.The preset temperature value can select according to actual needs.
Referring to FIG. 4, in one embodiment of the application, after the S731, the method also includes:
S734 judges second difference if first temperature and the second temperature are no more than preset temperature value
It whether is more than the second threshold；
S735, if second difference is no more than the second threshold, the analysis result is first cable and institute
State cable connector operation fault-free；
S736, if second difference is more than the second threshold, the analysis result is to need again there are measurement error
Measurement.
If the running temperature of the cable connector and first cable is not above the preset temperature value, judge
Whether second difference is more than the second threshold.If second difference is no more than the second threshold, described to divide
Analysing result is that first cable and the cable connector run fault-free.If first temperature and the second temperature are not
More than preset temperature value, but second difference is more than the second threshold, then there are measurement errors for the analysis result, is needed
It re-measures.
In one embodiment of the application, before the S100, which comprises
The first fiber-optic grating sensor and the second fiber-optic grating sensor are set gradually on cable under test, wherein described
One fiber-optic grating sensor is set at the cable connector, and second fiber-optic grating sensor is set to first cable
On.
The cable under test includes first cable, the cable connector and second cable.Optical fiber grating sensing
The direct measurement to physical quantitys such as temperature, strains may be implemented in device.First fiber-optic grating sensor and second optical fiber
Grating sensor is for issuing first light beam, it is to be understood that first light beam is not by first fiber grating
Sensor or second fiber-optic grating sensor generate.The fiber-optic grating sensor can connect fiber grating demodulation with optical fiber
Instrument generates first light beam by the fiber Bragg grating (FBG) demodulator, and first light beam is sent to the fiber grating and is passed
Sensor.It is understood that second fiber-optic grating sensor is set on first cable, the first position is institute
State the position that the first light beam is radiated on first cable.First fiber-optic grating sensor can be set in described first
On position, it can also be not provided with specifically selecting according to actual needs, the application is without limitation on the first position.
Fig. 5 is referred to, in one embodiment of the application, the method also includes:
S800 makes first light beam be radiated at the 4th light beam of formation on the second position, wherein the 4th light beam has
4th wavelength, the second position are located on second cable；
S810 generates third spectrum picture after carrying out demodulation analysis to the 4th light beam；
S820 obtains third temperature and third oscillation intensity after analyzing the third spectrum picture；
S830, analysis compares first temperature and the third temperature, and obtains first temperature and the third
The third difference of temperature；And
S840 obtains first oscillation intensity and the third oscillation intensity, and obtain first oscillation intensity and
4th difference of second oscillation intensity.
Preferably, the second position can be located at the middle section of second cable.The fiber Bragg grating (FBG) demodulator can be with
Third spectrum picture is generated after carrying out demodulation analysis to the 4th light beam.The processor can be to the third spectrum picture
The third temperature and the third oscillation intensity are obtained after being analyzed, the processor, which can be, has edited good algorithm
Central processing unit.The processor, which can also be analyzed, compares first temperature and the third temperature, and obtains described first
The third difference of temperature and the third temperature, and first oscillation intensity and the third oscillation intensity are obtained, and
To the 4th difference of first oscillation intensity and second oscillation intensity.
Fig. 6 is referred to, in one embodiment of the application, after the S840, the method also includes:
S841 judges whether the third difference is more than third threshold value；
S842, if the third difference is more than the third threshold value, judge the 5th difference whether more than the 5th threshold value,
In, the 5th difference is the difference of first difference and the third difference；And
Whether S843 judges the 6th difference more than the 6th threshold value, wherein the 6th difference is second difference and institute
State the difference of the 4th difference；
S844, if the 5th difference is more than the 5th threshold value, and the 6th difference is more than the 6th threshold value, institute
Analysis result is stated as second cable operation exception.
Wherein, the third threshold value, the 5th threshold value and the 6th threshold value can select according to actual needs, this
Application is without limitation.5th difference is temperature difference, is the difference of first difference and the third difference, wherein institute
The difference that the first difference is first temperature and the second temperature is stated, the third difference is first temperature and described
The difference of third temperature.Described the sixth is that oscillation intensity difference, be the difference of second difference and the 4th difference.Its
In, second difference is the difference of first oscillation intensity and second oscillation intensity, and the 4th difference is described
The difference of first oscillation intensity and the third oscillation intensity.If the 5th difference is more than the 5th threshold value, and described the
Six differences are more than the 6th threshold value, then it can be shown that second cable is operating abnormally.Method provided in this embodiment can be with
The operation conditions of second cable is monitored, so prevent the cable caused by second cable fault other therefore
Barrier.
Fig. 7 is referred to, in one embodiment of the application, after the S842, the method also includes:
S845 judges whether the third temperature is more than default if the 5th difference is no more than the 5th threshold value
Temperature value；
Whether S846 judges the 4th difference more than the 4th if the third temperature is more than the preset temperature value
Threshold value；
S847, if the 4th difference is no more than the 4th threshold value, the analysis result is second cable operation
Normally.
Wherein, the 4th difference is the difference of first oscillation intensity and the third oscillation intensity.If described
Five differences are no more than the 5th threshold value, and the third temperature is no more than the preset temperature value and the 4th difference
No more than the 4th threshold value, then the analysis result is the second cable normal operation.
In one embodiment of the application, before the S800, which comprises
Third fiber-optic grating sensor is set on cable under test, wherein the third fiber-optic grating sensor is set to
On second cable.It is understood that the third fiber-optic grating sensor is set on second cable, described
Two positions are the positions that first light beam is radiated on second cable.The third fiber-optic grating sensor can be set
In on the second position, can also being not provided with specifically selecting according to actual needs, the application on the second position
Without limitation.
Fig. 8 is referred to, in one embodiment of the application, the method also includes:
S20 executes first kind alarm operation if the analysis result is cable connector operation exception；
S21 is executed if the analysis result is that first cable run overloads or second cable is operating abnormally
The alarm operation of second class；
S22, if the analysis result is without re-measuring, then to execute the alarm operation of third class there are measurement error.
In one embodiment, the processor can control warning device according to the analysis result and carry out alarm behaviour
Make.The first kind alarm operation, second class alarm operation and third class alarm operation may include acoustic alarm, light
Alarm etc., can specifically select, the application is without limitation according to actual needs.In one embodiment, the first kind alarm
Operation can be acoustic alarm and light alarm, and the second class alarm operation can be acoustic alarm, and the third class alarm operation can
To be light alarm.Method provided in this embodiment can remind the operation conditions of cable under test described in staff as early as possible, thus
Ensure the timeliness of the cable under test maintenance.
In one embodiment of the application, the method also includes:
The analysis result is sent to terminal device.
The interface or device that can be wirelessly communicated, such as RS485 communication interface or WIFI can be set on the processor
Module (wifi module), and then the analysis result is transmitted to the terminal device.Staff can be in the terminal
On remotely monitor the operation conditions of the cable under test, so as to cable connector described in timely learning, first cable and described
The operation conditions of second cable.
Fig. 9 is referred to, the application also provides a kind of cable connector monitoring system, including fiber-optic grating sensor 100, optical fiber
Grating demodulation instrument 200 and the signal processor 300.
The fiber-optic grating sensor 100 is for issuing the first light beam, and first light beam is by the cable under test connector
Second light beam is generated after the influence of 20 operation conditions, and third light is generated after being influenced by 21 operation conditions of the first cable connector
Beam.The fiber-optic grating sensor 100 is installed on the external insulation layer surface of the cable under test.The fiber-optic grating sensor
100 issue first light beam, generate second light beam after first light beam is influenced to change wavelength by the external world.The light
Fine grating demodulation instrument 200 and the signal processor 300 analyze second light beam, i.e., carry out to the knots modification of wavelength
Analysis, and then obtain the operation conditions of the cable under test connector 20 and first cable 21.
The fiber Bragg grating (FBG) demodulator 200 is connect with the fiber-optic grating sensor 100 by optical fiber, with to the optical fiber
Grating sensor 100 emits first light beam, and generates demodulation result, institute according to second light beam and the third light beam
Stating demodulation result includes first spectrum picture and second spectrum picture.
The fiber Bragg grating (FBG) demodulator 200 is connect with the fiber-optic grating sensor 100 by optical fiber, with to the optical fiber
Grating sensor 100 emits the light of the fixed wave length range, and according to the feedback photogenerated demodulation result.The optical fiber light
Grid (FBG) demodulator 200 can be generated and emit first light beam, and then first light beam to the fiber-optic grating sensor 100
It is transmitted through the fiber to the fiber-optic grating sensor 100, by the fiber-optic grating sensor 100 by the fixed wave length range
Light emitting to the cable under test connector 20 at.The fiber Bragg grating (FBG) demodulator 200 can also receive second light beam, and
Wavelength demodulation is carried out to second light beam, and then obtains the spectral information of second light beam, i.e., described first spectrum picture.
The fiber Bragg grating (FBG) demodulator 200 can also receive the third light beam, and carry out Wavelength demodulation to the third light beam, in turn
The spectral information of the third light beam is obtained, i.e., described second spectrum picture.
The signal processor 300 is connect with 200 signal of fiber Bragg grating (FBG) demodulator, according to first spectrogram
Picture and second spectrum picture generate analysis as a result, the analysis result is used to indicate the operation of the cable under test connector 20
Situation.
The signal processor 300 is connect with 200 signal of fiber Bragg grating (FBG) demodulator, according to first spectrogram
Picture and second spectrum picture generate analysis as a result, the analysis result is used to indicate the operation of the cable under test connector 20
Situation.The signal processor 300 can analyze first spectrum picture, and then obtain first temperature and institute
State the first oscillation intensity.In addition to this, the signal processor 300 can also analyze second spectrum picture, into
And obtain the second temperature and second oscillation intensity.First temperature and first oscillation intensity are described to be measured
Running temperature and oscillation intensity at cable connector 20.The second temperature and second oscillation intensity are first cable
Running temperature and oscillation intensity at 21.The signal processor 300 can also obtain first temperature and second temperature
First difference of degree, and obtain the second difference of first oscillation intensity and second oscillation intensity.Further, institute
First temperature, the second temperature, first difference and second difference can be carried out by stating signal processor 300
Analysis obtains analysis result.The analysis result is used to indicate the operation conditions of the cable connector 20.
The fault monitoring system 10 provided in this embodiment includes the fiber-optic grating sensor 100, the optical fiber light
Grid (FBG) demodulator 200 and the signal processor 300.The fiber Bragg grating (FBG) demodulator 200 is sent out to the fiber-optic grating sensor 100
Penetrate first light beam.In turn, the fiber-optic grating sensor 100 is respectively to the cable under test connector 20 and first electricity
First light beam is issued at cable 21.First light beam changes after being influenced by temperature at the cable under test connector 20 and vibration
The wavelength of darkening, and generate second light beam.Second light beam is transmitted through the fiber to the fiber Bragg grating (FBG) demodulator
200, Spectrum Analysis is carried out to second light beam by the fiber Bragg grating (FBG) demodulator 200, and generate the first spectrum picture.It is described
First light beam changes the wavelength of light after being influenced by temperature at first cable 21 and vibration, and generates the third light beam.
The third light beam is transmitted through the fiber to the fiber Bragg grating (FBG) demodulator 200, by the fiber Bragg grating (FBG) demodulator 200 to described
Third light beam carries out Spectrum Analysis, and generates second spectrum picture.The signal processor 300 can be to first light
Spectrogram picture and second spectrum picture are analyzed, so generate analysis as a result, the analysis result be used to indicate described in
Survey the operation conditions of cable connector 20.
The fault monitoring system 10 provided in this embodiment is the prison based on the cable connector stability monitoring method
Examining system, the fault monitoring system 10 can solve to exist in traditional scheme and be unable to judge accurately cable connector operation conditions and be
No abnormal problem.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (12)
1. a kind of cable connector stability monitoring method, the cable connector is special for connecting the first cable and the second cable
Sign is, comprising:
Emit the first light beam, and be radiated at first light beam on the cable connector and form the second light beam, wherein described
One light beam has first wave length, and second light beam has second wave length；
The first spectrum picture is generated after carrying out demodulation analysis to second light beam；
The first temperature and the first oscillation intensity are obtained after analyzing first spectrum picture；
First light beam is set to be radiated at formation third light beam on first position, wherein the third light beam has third wavelength,
The first position is located on first cable；
The second spectrum picture is generated after carrying out demodulation analysis to the third light beam；
Second temperature and the second oscillation intensity are obtained after analyzing second spectrum picture；
Analysis compares first temperature and the second temperature and first oscillation intensity and second vibration is strong
Degree, and analysis is obtained as a result, the analysis result is used to indicate the operating status of the cable connector.
2. the method as described in claim 1, which is characterized in that the analysis compares first temperature and second temperature
Degree and first oscillation intensity and second oscillation intensity, and analysis is obtained as a result, the analysis result is used to indicate
The operating status of the cable connector, comprising:
First temperature and the second temperature are obtained, and obtains the first poor of first temperature and the second temperature
Value；
First oscillation intensity and second oscillation intensity are obtained, and obtains first oscillation intensity and second vibration
Second difference of fatigue resistance；
Judge whether first difference is more than first threshold；
If first difference is more than the first threshold, judge whether second difference is more than second threshold；
If second difference is more than the second threshold, the analysis result is cable connector operation exception.
3. method according to claim 2, which is characterized in that it is described judge first difference whether be more than first threshold it
Afterwards, the method also includes:
If first difference is no more than the first threshold, judge first temperature and the second temperature whether be more than
Preset temperature value；
If first temperature and the second temperature are more than preset temperature value, judge whether second difference is more than described
Second threshold；
If second difference is no more than the second threshold, the analysis result is first cable run overload.
4. method as claimed in claim 3, which is characterized in that if first difference is no more than the first threshold,
After then judging whether first temperature and the second temperature are more than preset temperature value, the method also includes:
If first temperature and the second temperature are more than preset temperature value, judge whether second difference is more than described
Second threshold；
If second difference is no more than the second threshold, the analysis result is first cable and the cable connector
Run fault-free；
If second difference is more than the second threshold, the analysis result is that there are measurement errors, need to be re-measured.
5. the method as described in claim 1, which is characterized in that the first light beam of the transmitting, and irradiate first light beam
The second light beam is formed on the cable connector, wherein first light beam has first wave length, and second light beam has the
Two wavelength, before, the method also includes:
The first fiber-optic grating sensor and the second fiber-optic grating sensor are set gradually on cable under test, wherein first light
Fiber grating sensor is set at the cable connector, and second fiber-optic grating sensor is set on first cable.
6. the method as described in claim 1, which is characterized in that the method also includes:
First light beam is set to be radiated at the 4th light beam of formation on the second position, wherein the 4th light beam has the 4th wavelength,
The second position is located on second cable；
Third spectrum picture is generated after carrying out demodulation analysis to the 4th light beam；
Third temperature and third oscillation intensity are obtained after analyzing the third spectrum picture；
Analysis compares first temperature and the third temperature, and obtains the third of first temperature and the third temperature
Difference；And
First oscillation intensity and the third oscillation intensity are obtained, and obtains first oscillation intensity and third vibration
4th difference of fatigue resistance.
7. method as claimed in claim 6, which is characterized in that the acquisition first oscillation intensity and third vibration
Intensity, and after obtaining the 4th difference of first oscillation intensity and the third oscillation intensity, the method also includes:
Judge whether the third difference is more than third threshold value；
If the third difference is more than the third threshold value, judge the 5th difference whether more than the 5th threshold value, wherein the described 5th
Difference is the difference of first difference and the third difference；And
Judge the 6th difference whether more than the 6th threshold value, wherein the 6th difference is that second difference and the described 4th are poor
The difference of value；
If the 5th difference is more than the 5th threshold value, and the 6th difference is more than the 6th threshold value, the analysis knot
Fruit is second cable operation exception.
8. the method for claim 7, which is characterized in that if the third difference is more than the third threshold value, sentence
Whether the 5th difference of breaking is more than the 5th threshold value, wherein the 5th difference is the difference of first difference and the third difference
After value, the method also includes:
If the 5th difference is no more than the 5th threshold value, judge whether the third temperature is more than preset temperature value；
If the third temperature is more than the preset temperature value, judge the 4th difference whether more than the 4th threshold value；
If the 4th difference is no more than the 4th threshold value, the analysis result is the second cable normal operation.
9. method according to claim 8, which is characterized in that described to be radiated at first light beam on the second position to be formed
4th light beam, wherein the 4th light beam has the 4th wavelength, and the second position is located on second cable, before, institute
State method further include:
Third fiber-optic grating sensor is set on cable under test, wherein the third fiber-optic grating sensor is set to described
On second cable.
10. method as described in any one of claims 1-9, which is characterized in that the method also includes:
If the analysis result is cable connector operation exception, first kind alarm operation is executed；
If the analysis result is that first cable run overloads or second cable is operating abnormally, the second class report is executed
Alert operation；
It if the analysis result is that there are measurement errors, need to re-measure, then execute the alarm operation of third class.
11. method as described in any one of claims 1-9, which is characterized in that the method also includes:
The analysis result is sent to terminal device.
12. a kind of cable connector monitors system, based on method described in claim 1 to 11 any one, which is characterized in that packet
It includes:
Fiber-optic grating sensor (100), for issuing the first light beam, first light beam is run shape by cable under test connector (20)
The second light beam is generated after the influence of condition, and third light beam is generated after being influenced by the first cable connector (21) operation conditions；
Fiber Bragg grating (FBG) demodulator (200) is connect with the fiber-optic grating sensor (100) by optical fiber, with to the optical fiber light
Gate sensor (100) emits first light beam, and generates demodulation result, institute according to second light beam and the third light beam
Stating demodulation result includes the first spectrum picture and the second spectrum picture；
Signal processor (300) is connect, according to first spectrum picture with the fiber Bragg grating (FBG) demodulator (200) signal
Analysis is generated with second spectrum picture as a result, the analysis result is used to indicate the operation of the cable under test connector (20)
Situation.
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| CN201910391493.9A CN110146126A (en) | 2019-05-10 | 2019-05-10 | Cable connector stability monitoring method and cable connector monitor system |
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| JPH10160625A (en) * | 1996-11-28 | 1998-06-19 | Nippon Telegr & Teleph Corp <Ntt> | Method and system for monitoring abnormality of optical-fiber cable |
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| CN104991149A (en) * | 2015-08-06 | 2015-10-21 | 陕西古源电力科技有限公司 | Single core power cable online state monitoring device and method |
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